Joseph wodell



(No Model.)

J. WODELL.

FURNAGB AND GRATIS.

10,439,229 i Patented00t.28,189o

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UNITED STATES PATENT OFFICE.

JOSEPH VVODELL, OF NEW YORK, N. Y., ASSIGNOR TO THE BOYNTON FURNACE COMPANY, OF SAME PLACE.

FU RNACE AN D G RATE.

SPECIFICATION forming part of Letters Patent No. 439,229, dated October 28, 1890.

Application filed March 3, 1890.

To all whom t may concern.-

Be it known that I, JOSEPH WODELL, a citizen of the United States, residing in the city of New York, in the county of New York, in the State of New York, have invented a new and useful Improvement in Furnaces and Grates, of which the following is a description.

The object of the invention is to provide means for preventing the misadjustment of grates or grate-bars; and the invention consists in certain novel parts and in certain novel combinations of parts in' or in connection with a grate or a grate-bar and in or in connection with a furnace or other heater in which such grate or grate-bar is employed, whereby it is rendered impossible, either through inadvertence or otherwise, to leave the same in a condition of improper adjustment.

In the drawings,Figure l represents a view in perspective of aportion of one form of grate to which my improvement is applicable, the covering-shield of the interlockingr mechanism having been removed. Fig. 2 is a view of the adjusting-plate or journal-plate detached. Fig. 3 is a plan view of the operating-lever, showing the receiving-face of the same. Flg. 4 is a perspective view of the operating-lever. Fig. 5 represents a modification. Fig. 6 is a transverse section of one of the triangular grate-bars, which in this example illustrate the invention.

In this instance the grate, as A, is composed of a series of bars a, each bar being in its main portion of a generally triangular form in transverse sectionthat is,having three concentric equidistant fuelsupporting surfaces, as is common--and the whole being connected for operation in -an ordinary manner by suitable gear-wheels d', which are iixed concentrically upon the shank of the bar. One of the members of the series of bars is provided with an extended shank or spindle a2, the outer extremity a3 of which is transversely of substantially triangular form, as seen in Fig. 1, the planes of the triangle corresponding with the planes of the body of the bar. The end a3 of the shank projects outwardly through an opening 0 in the adjusting or guide plate B, and is concentric with the in- Serial No. 342,470. (No model.)

ner face of the guide-lugs b', b2, and b3, which project outwardly from the vertical exterior face of the same, and which are each provided with a recess or inhang, as seen in Fig. 1 and as indicated in dotted lines in Figs. 2 and 5. 55

As will be apparent to persons conversant with the art, the opening for the grate or section shank and the guide'lugs-one or moreemployed in connection therewith may be provided in the grate-front itself; but in practice it has been found advantageous to provide these in a separate plate, which in being applied may be more readily adjusted to the position of the projecting shank of the bar or section.

As will be seen in Fig. 2 of the drawings, the lugs b b2 b3 are triangularly arranged, and in practice they are at such distances apart that the inclosed space is just sufficient when the grate bar or section is in its proper fuelsupporting adjustment to permit the insertion and manipulation of the operating or grate-shaking lever, but is insufficient to p`er mit the withdrawal of such lever when such bar or section is in any other adjustment.

Under the construction seen in Fig. 5 in the drawings instead of the three lugs b b2 b3 a single lug bis employed, its configuration and its relation to the shank a2 of the bar or section being such that the operating-lever is not Withdrawable therefrom except when such bar or section has been brought into its proper fuel-supporting position.

As shown in Figs. 3 and 4, the operatinglever C has an engaging-orice c', by which it is rendered readily applicable to the triangular end a3 of the shank a2; but it will be apparent that the parts might be adapted to each other in various other ways.

It will be understood that the invention is applicable with equal `advantage to a single bar or to any one-part laterally-tilting grate or grate-section which is provided with a triangular or other analogous operating-shank.

The invention having been `thus described, what is claimed ism In a furnace or heater, a front plate which is provided upon its outer surface with recessed or indrawn outwardly-extending lugs, one or more, and which has a perforation ad zoo jacent to such lug` or lugs, :L grate bar or secshank except when such bar or section is in tion which has a shank which extends outits proper fuel-supporting position, in combi- 1o Wardly through the perforation in the furnation, substantially as set forth.

nace-front, and an operating-lever which is 5 adapted to engage theshank of the bar or see- JOSEPH WODELL.

tion and to be reciprocated, and which is in Vitnesses: such relation to the 111g or lugs that it is not N. A. BOYNTON,

Withdrawable from its engagement With the PERCY S. ALDEN. 

